[article]
Titre : |
An air-standard cycle and a thermodynamic perspective on operational limits of Ranque–Hilsh or vortex tubes |
Titre original : |
Cycle à air traditionnel, aspects thermodynamiques et limites du fonctionnement des tubes Ranque-Hilsch ou vortex |
Type de document : |
texte imprimé |
Auteurs : |
José Roberto Simões-Moreira, Auteur |
Année de publication : |
2010 |
Article en page(s) : |
pp. 765-773 |
Note générale : |
Génie Mécanique |
Langues : |
Anglais (eng) |
Mots-clés : |
Vortex tube Thermodynamic cycle Ranque-Hilsch Energy balance COP |
Index. décimale : |
621.5 Energie pneumatique. Machinerie et outils. Réfrigération |
Résumé : |
A Thermodynamic air-standard cycle was envisaged for Ranque–Hilsh (R–H) or Vortex Tubes to provide relevant Thermodynamic analysis and tools for setting operating limits according to the conservation laws of mass and energy, as well as the constraint of the Second Law of Thermodynamics. The study used an integral or control volume approach and resulted in establishing working equations for evaluating the performance of an R–H tube. The work proved that the coefficient of performance does not depend on the R–H tube operating mode, i.e., the same value is obtained independently if the R–H tube operates either as a heat pump or as a refrigeration device. It was also shown that the isentropic coefficient of performance displays optima values of cold and hot mass fractions for a given operating pressure ratio. Finally, the study was concluded by comparing the present analysis with some experimental data available in the literature for operating pressures ranging 2–11 atm. |
DEWEY : |
621.5 |
ISSN : |
0140-7007 |
En ligne : |
http://www.sciencedirect.com/science/article/pii/S0140700710000198 |
in International journal of refrigeration > Vol. 33 N° 4 (Juin 2010) . - pp. 765-773
[article] An air-standard cycle and a thermodynamic perspective on operational limits of Ranque–Hilsh or vortex tubes = Cycle à air traditionnel, aspects thermodynamiques et limites du fonctionnement des tubes Ranque-Hilsch ou vortex [texte imprimé] / José Roberto Simões-Moreira, Auteur . - 2010 . - pp. 765-773. Génie Mécanique Langues : Anglais ( eng) in International journal of refrigeration > Vol. 33 N° 4 (Juin 2010) . - pp. 765-773
Mots-clés : |
Vortex tube Thermodynamic cycle Ranque-Hilsch Energy balance COP |
Index. décimale : |
621.5 Energie pneumatique. Machinerie et outils. Réfrigération |
Résumé : |
A Thermodynamic air-standard cycle was envisaged for Ranque–Hilsh (R–H) or Vortex Tubes to provide relevant Thermodynamic analysis and tools for setting operating limits according to the conservation laws of mass and energy, as well as the constraint of the Second Law of Thermodynamics. The study used an integral or control volume approach and resulted in establishing working equations for evaluating the performance of an R–H tube. The work proved that the coefficient of performance does not depend on the R–H tube operating mode, i.e., the same value is obtained independently if the R–H tube operates either as a heat pump or as a refrigeration device. It was also shown that the isentropic coefficient of performance displays optima values of cold and hot mass fractions for a given operating pressure ratio. Finally, the study was concluded by comparing the present analysis with some experimental data available in the literature for operating pressures ranging 2–11 atm. |
DEWEY : |
621.5 |
ISSN : |
0140-7007 |
En ligne : |
http://www.sciencedirect.com/science/article/pii/S0140700710000198 |
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